## 25.5. The at Command

The at facility submits a command line (or a script) for execution at an arbitrary later time. It has the form:

>     % at options time < scriptfile

This submits scriptfile for execution at a later time. The redirection (`<`) isn't required on versions that can read directly from a file. By default, at reads the commands from its standard input. So if you don't want to write a script, you can omit the file and type your commands on the terminal, terminated by CTRL-d:

>     % at  options time

>     Command 1
>     Command 2
>     ...
>     CTRL-d

The time is most commonly a four-digit number representing a time on a 24-hour clock. For example, `0130` represents 1:30 a.m. and `1400` represents 2 p.m. You can also use abbreviations such as `1am`, `130pm`, and so on.

-- ML

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